Is it possible in Power BI power query to connect from A.pbix report to the results of other B.pbix report? If so, how? The reason for doing this is that in A.pbix we have one sort of aggregation - say many monthly reports for one country, and in B.pbix we have another, second stage, sort of aggregation - say one report for all countries.
There are reasons for keeping it separated - tidiness, possibility to refresh single source, lower memory used.